Not really worth it

The app could be improved in a lot of ways. Some of the definitions are a little bit off or they dont offer multiple definitions for words that have multiple meanings. As for the kanji study section, kanji compounds should be used not just individual kanji, which doesnt help at all. Furthermore the example words they provide for the kanji sometimes dont include its most common uses. I wonder if a fluent Japanese speaker even had any input into the app at all. As it is, I think Im better off studying on my own.

Troy_and_Abed about JLPT Study, 1-5 Level Kanji and Vocabulary Japanese Language Proficiency, v2.5.3